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]. VELEHRADSKY.

GEARING FOR NOTE SHEET PROPELLING.

APPLICATION FILED OCT. 1.1911.

'1 09,789. Pdtented July 15, 1919.

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1. VELEHRADSKY.

GEARING FOR NOTE SHEET PROPELLING. APPLICATION FILED 012121.191].

Patented July 15, 1919.

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D D U a U DD UNITED STATES PATENT OFFICE.

JOSEPH VELEI-IRADSKY, OF NEW YORK, N. Y., ASS IGNOR TO AUTOPIANOCOMPANY, A CORPORATION OF NEW YORK.

GEARING FOR NOTE-SHEET PROPELLIN G.

Application filed October 1, 1917.

To all whom it may concern:

Be it known that I, Josnrrr VELEHRAD- SKY, a citizen of the UnitedStates,residing at New York, in the county of New York and State of NewYork, have invented a new and useful Gearing for Note-Sheet Propelling,of which the following is a specification.

In musical instruments a motor is employed for note sheet propelling andthe same is connected by suitable gearing to opcrate either the take-upspool for playing or the music spool for rewinding. This gearingconsists of a shaft arranged parallel to the axis of the take-up spoolcarrying a pinion which can engage with a gear on the take-up spool, andloosely arranged on said shaft is a gear which connects by a sprocketchain to a sprocket pinion on the hub or socket which carries the musicspool. This gear usually has a pin or clutch which is engaged by a pinor clutch secured to said shaft. A lever having pins engaging saidclutch is connected by suitable links to the tempo lever so that by thisarrangement the shaft can be slid forward and backward.

While slid forward the pinion is engaged with the gear on the take-upspool and the clutch is disengaged from the gear on the shaft, and thusthe take-up spool is rotated to draw the perforated note sheet forwardover the apertured tracker bar.

When the shaft is slid backward the pinion is disengaged from the gearand the clutch is engaged with the loose gear, whereby the music spoolis rapidly rotated to rewind the perforated note sheet.

With this gearing it is customary to slide the shaft axially so as tocause the teeth of the pinion to engage and disengage from the teeth onthe gear on the take-up spool. When the engaging action takes place theteeth do not always come in position for such engagement and sometimesrepeated efforts have to be made to cause such engagement. This causeswear on the teeth of the pinion and the gear, and often leads torattling.

To overcome this objection I provide means whereby when said shaft ismoved forward the pinion is moved over and then into mesh with saidgear. By this arrangement the engagement can always take place and wearis eliminated.

Referring to the accompanying two Specification of Letters Patent.

Patented July 15, 1919.

Serial No. 194,213.

sheets of drawings forming part of this application for patent,

Figure 1 is a front elevation of a note sheet propelling gearing with myinvention applied thereto;

Fig. 2 is an enlarged view showing the pinion disengaged from the gear;

Fig. 3 is a similar view illustrating the position of the pinion on thefirst part of its forward movement;

Fig. 4 is a similar view illustrating the pinion in complete engagementwith the gear, and F Fig. 5 is an end view on the line 5-5 of Referringto the drawings and in detail,

10 designates the sliding shaft previously.

referred to, which has on its end a pinion 11 for engagement with thegear 12 on the take-up spool. Said shaft 10 is provided with a collar G.A cam A is secured to the side of the spool box below the shaft, and astop or retaining-piece B is secured to the side of the spool box abovethe shaft.

The socket or bearing for the shaft in the side of the spool box is madeelongated so that the end of the shaft can move up and down verticallytherein. In operation, when the shaft is slid forward to cause thepinion to engage with the gear the collar C rides up over the cam, asshown in Fig. 3, which thus causes the pinion to move u over the gearwith the teeth disengage The continued forward movement of the shaftallows the collar G to drop down in front of the cam A, whereby thepinion will engage sidewise with the gear. The stop or retaining-piece Bbears on the collar 0 when the shaft is in its forward position and thusholds the shaft down in its'bearing in the side of the spool box andholds the pinion nicely in mesh with the gear. By this arrangement aneasy and nlce engagement of the pinion with the gear is provided for.

Details and arrangements herein shown and described may be greatlyvaried by a skilled mechanic without departing from the scope of myinvention as expressed in the claims.

Having thus fully described my invention, what I claim and desire tosecure by Letters Patent is 1. In gearing for note sheet propelling, thecombination of a take-up spool, a gear thereon, a shaft arrangedparallel to the axis of the take-up spool, a pinion carried thereby,means for moving the shaft axially, and means for causing the pinion tomove over and then into mesh with said gear.

2. In gearing for note sheet propelling, the combination of a take-upspool, a gear thereon, a shaft arranged parallel to the axis of thetake-up spool, a pinion carried thereby, means for moving the shaftaxially, and cam mechanism for causing the pinion to move over and intomesh with said gear. I 1

3. In gearing for note sheet propelling, the combination of the gear onthe take-up spool, a shaft, a pinion carried thereby, means for movingthe shaft to engage the pinion with and from said gear, a collar on saidshaft, and a cam engaged by said collar to cause the pinion to move overand then into mesh with said gear.

4. In gearing for note sheet propelling, the combination of the gear onthe take-up spool, a shaft, a pinion carried thereby, means for movingthe shaft to engage the pinion with and from said gear, a collar on saidshaft, a cam engaged by said collar to cause the pinion to move over andthen into mesh with said gear, and a stop for holding the pinion in meshwith said gear when engaged therewith.

In testimony whereof I have hereunto affixed my signature.

JOSEPH VELEHRADSKY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

